Valve adjuster and driver.



E. L. RUSSELL.

VALVE ADJUSTER AND DRIVER.

APPLICATION FILED MAR. is. 1912. RENEWED FEB. 8. i915.

1,153,?1 G, Patented Sept. 14, 1915.

SHOT/W616 EDWIN I1. RUSSELL, 0F CLEVELAND, OHIO.

VALVE ADJUSTER AND DRIVER.

Specification of Letters Patent.

Patented se t. 141, rats.

Application fi1ed March 16, 19-12, Serial No. 684,313. flenewed webruary 8, 1915. Serial No. 6,806.

To all whom it may concern:

Be it known that I, EDWIN L. RUssnLL, a citizen of the United States, residing at Cleveland, in the county of Guyahoga and State of Ohio, have invented a new and useful Valve Adjuster and Driver, of which the following is a specification.

The object of my invention is to provide a simple connection between a valve or other seated member and its driving member, by means of which, upon undue resistance of the valveto movement along its seat, the valve will be given automatically a sufficient initial movement from its seat to be relieved therefrom.

The accompanying drawings illustrate my invention.

Figure 1 is an axial section, embodying my invention; Fig, 2 is an axial fragmentary section on line of Fig. 1, and Fig. 3 a section on line 33 of Fig. 2.

In the drawings, 10 indicates an axially tapered rotary valve seated in a correspondingly tapered casing or seat 11. The rotary driving shaft 12 is held against axial movement by any suitable means such as flanges 13 and easing 1a. The free end of shaft is reduced at 15 and journaled upon this reduced end is a sleeve 16 having an external thread 17 which is conveniently a square thread The external diameter of threads 1'7 is such that the sleeve 16 fits within the pocket 18 formed in the adjacent end of valve 10 and the sleeve 16 is prevented from relative rotation within the pocket by means of a spline 19, engaging said sleeve 16. One end of sleeve 16 rests upon a shoulder 21 on shaft 12 and the axial length of sleeve 16 is suilicient to fill the pocket 18. Mountedgbetween the threads 17 is a spring helix 22having an internal diameter somewhat greater than the diameter of sleeve 16 at the base of the threads and an internal diameter less than the internal diameter of the pocket. One end. of this helix is connected at 23 to shaft 12 while the other end is connected at 24: to valve 10. Thethread 17- is cut away at 25"so that the adjacent end of the helix 22 may have freeda'm of angular movement relative to the sleeve 16.

If the shaft '12 be rotated in the direction indicated'by the arrow and there be no abnormal resistance to movement of the valve 10 within its seat, the driving connection between the shaft and valve will serve to drive the valve rotatively. Ifthere be abnormal resistance to movement of the valve the shaft end of the helix 22 will be moved angularly relative to the threads 17 and, as the sleeve 16 is held against rotation by the resistance of valve 10, there will be a cam movement of the helix upon the thread thus projecting the sleeve 16 axially relative to shaft 12 and driving valve 10 away from its seat enough to relieve the abnormal resistance. If shaft 12 be rotated in the opposite direction and there be abnormal resistance to movement of the valve, the helix Will rotate within the space'between the threads andwill thus be driven aXi \lly relative to the shaft and thus will shift the valve 10 away from its seat enough to relieve the abnormal resistance.

I claim as my invention:

The-combination of a seat member, a r0- tary seated member mounted thereon, a threaded member splined to the seated member and substantially coaxial therewith, a driving shaft, and a spring helix mounted between the threads'of the threaded member and anchored at one end to the driving shaft and anchored at the other end to the rotary seated member.

In witness whereof, I have hereunto set my hand and seal at Indianapolis, Indiana, this ninth day of March, A. D. one thousand nine hundred and twelve.

EDWIN L. RUSSELL.- [1 s] Witnesses:

ARTHUR M. Hoo G. B. SGHLEY. 

